16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface - ADS9120


16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface



The ADS9120 is an 16-bit, 2.5-MSPS, successive approximation register (SAR) analog-to-digital converter (ADC) with ±0.25-LSB INL and 96-dB SNR specifications under typical operating conditions. The high throughput enables developers to oversample the input signal to improve dynamic range and accuracy of the measurement.

The device supports unipolar, fully-differential analog input signals and operates with a 2.5-V to 5-V external reference, offering a wide selection of input ranges without additional input scaling.

The device consumes only 15.5 mW of power when operating at the full 2.5-MSPS throughput. Power consumption at lower throughputs can be reduced by using the flexible low-power modes (NAP and PD).

The integrated multiSPI™ serial interface is backward-compatible to the traditional SPI protocol. Additionally, configurable features simplify board layout, timing, and firmware and achieve high throughput at lower clock speeds, thus allowing easy interface with a variety of microcontrollers, digital signal processors (DSPs), and field-programmable gate arrays (FPGAs).

The device supports JESD8-7A compliant I/Os, the extended industrial temperature range, and is offered in a space-saving, 4-mm × 4-mm, VQFN package.


  • Sample Rate: 2.5 MSPS
  • No Latency Output
  • Excellent DC and AC Performance:
    • INL: ±0.25 LSB (Typ), ±0.6 LSB (Max)
    • DNL: ±0.6 LSB (Max), 16-Bit NMC
    • SNR: 96 dB
    • THD: –118 dB
  • Wide Input Range:
    • Unipolar Differential Input Range: ±VREF
    • VREF Input Range: 2.5 V to 5 V,
      Independent of AVDD
  • Low-Power Dissipation:
    • 9 mW at 2.5 MSPS (AVDD Only)
    • 15 mW at 2.5 MSPS (Total)
    • Flexible Low-Power Modes Enable Power Scaling with Throughput
  • multiSPI™: Enhanced Serial Interface
  • JESD8-7A-Compliant Digital I/O at 1.8-V DVDD
  • Fully-Specified Over Extended Temperature Range: –40°C to +125°C
  • Small Footprint: 4-mm × 4-mm VQFN

View more

Parametrics Compare all products in Precision ADCs (<=10MSPS)

Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Integrated Features
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Operating Temperature Range (C)
THD (Typ) (dB)
SNR (dB)
Reference Mode
ADS9120 ADS9110
16    18   
2.5MSPS    2MSPS   
1    1   
Differential    Differential   
15    15   
-5    -5   
5    5   
SPI    SPI   
1.65    1.65   
1.95    1.95   
SAR    SAR   
-40 to 125    -40 to 85   
24VQFN    24VQFN   
-118    -118   
96    100   
Ext    Ext   

Featured tools and software